The outfit in the image is a men's traditional ethnic set known as a Kurta Pyjama. The ensemble consists of a long tunic (kurta) and loose-fitting trousers (pyjama). 

Kurta Details:
The kurta is primarily red or rust orange and features a striking all-over print in a contrasting white or off-white color. This distinctive vertical pattern is achieved using a traditional textile technique known as tie-dye, or the Japanese term, shibori print. The technique involves binding and dyeing the fabric to create mesmerising patterns with blurred edges. The kurta has a stylish mandarin collar, a straight, regular fit, and full sleeves. The fabric is typically a light-weight and breathable material such as pure cotton or a cotton blend. 

Pyjama Details:
The accompanying bottom wear consists of solid white or cream-colored pyjamas. These are loose-fitting trousers that are usually made from cotton or a cotton blend for comfort and ease of movement. They typically feature a drawstring or elasticated waistband.